Door-operating mechanism



P. R. FORMAN,

DOOR OPERATING MECHANISM.

'APPLICATION FILED IULYIG. 1911.

1 25,084. Patented Dec. 16, 1919.

/Z 2 1 /9 1. v M1 30 'ix D a 0 rrnn STATES PATENT OFFIE.

PARIS R. FORMAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL PNEUMATIC COMPANY, A CORPORATION OF WEST VIRGINIA.

DOOR-OPERATING MECHANISM.

Invention in Door-Operating Mechanism,.

of which the following is a specification.

This invention relates to door operating mechanism and particularly to that, class of the same which provides pneumatic motors for the operation of the type of doors known as the folding panel type.

A further object of the invention is to provide a pneumatically operated door and step operatin mechanism wherein the operation of the folding panel door and of the folding step is controlled by an overhead motor. A. further object of the invention is to provide means for insuring proper alinement of the various operating connections of the motor.

A further objectof the invention is to provide means for insuring the proper position of the movable parts at the limits of its movement.

Further objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location and rela= tive arrangement of parts, all as will be more fully hereinafter set forth as shown by the accompanying drawing and finally pointed out in the appended claims.

Referring to the drawing, 1

Figure 1 is a segmentary view in elevation of an overhead door motor, and connections for controlling the operation of a folding panel door, and showing in elevation the' folding step operating mechanism.

Fig. 2 is a top-plan view of the same. I Fig. 3 is a top-plan view of the portion of the step operating mechanism indicated at 33, Fig. l I Fig. 4 is an enlarged detail plan view of an adjustable lever employed in accordance with my invention.

The same part is designated by reference numeral wherever throughout the several views.

In accordance with my invention, I propose to employ an overhead motor for operating the folding panel doors and by that I mean a motor that is located above the doors in an out-of-the-way position, which is particularly desirable in the street car art the same it occurs Specification of Letters Patent.

Patented Dec. 16, 1919.

Application filed July 16, 1917. Seria1 No. 180,869.

with the present structure of cars employed. The overhead frame work of the door I indicate at '1. The folding door composed of the outer panels 2 and the .inner panels 3 is hinged together at 4. The panels 2 are each secured tothe shafts 5 and 6 respectively in any suitable manner, for example, by brackets 7, so that when the shafts 5 and 6 are rotated, the panels 2 will be rotated therewith, causing the panels 3 to fold thereon, for example, as described and set forth in the patent to Harold Rowntree, No. 1,168,334, which has become the standard form of folding panel doors employed in the 7 art. I extend the operating shafts 5 and.6

through the frame 1 and on top'of the frame 4 1 I locate the motor 2, for operating the respective shafts. To insure at all times the proper alinement of the parts and to avoid the wear on the wooden portions of the car structure, due toithe continual operation of the moving parts of the door operating mechanism, I mount the motor 2 and the bearings 9 and 10 of the shafts'5 and 6 on a 'metal bed plate 11 extending in one piece across the entire mechanism, as shown. The motor 2 may be of any desired construction, and whileI-have shown the same to be what is known in the art as the gear type, such as shown in the patent to Harold Rowntree,

No. 967 ,245, I wish it to be understood that" the specific structure of the motor forms no part of my present invention and that any type of motor may be employed in this connection. The motor is connected, as is usual by the rods 12 to the shafts 5 and 6 respectively to rock the same, upon the actuation of the motor. There are many means for accomplishing this, and while I have. shown one of the standard forms it is to beunder: stood that I .do not desire to belimited to the specificarrangement. In 'the form shown, the shaft 5 is provided at its upperend with a gear 15, which in turn meshes with a segment 16, carried by a shaft 17, which shaft is connected by a link 18 to the rod 12, whereas the shaft 6, is connected directly to the rod 12 by means of the lever 19. To secure the operation of the foldable step upon the rotation of the shafts 5 and 6 I provide the following means. The ends of these shafts are located beneath the car body floor and have secured thereto an eccentric lever 20, as shown, the end of which present invention to provide means for readily adjusting the working parts of the motor connections to take up the wear thereof and to thereby insure at all times, the proper position of the door and step in their completely opened or completely closed positions. To do this it is necessary to be able to lengthen or shorten the connection between the working parts of the motor and the lever, which operates the door shaft. I show av simple and efficient means for allowing this adjustment wherein the lever 19 is formed with a head provided with a threaded bore extending at right angles to the axis of the lever. A threaded pin is adapted to screw into this boring and is pivotally secured at one end of the rod 12.

Thus, it will be seen that by merely turn-a ing the pin 30 in the head of the lever 19 an adjustability is secured which permit the operating parts between the motor and the shafts to always be maintained in their proper relative positions.

Having now set forth the objects and nature of my invention, what I claim as new and useful and of my own invention, and desire to secure by Letters Patent is 1. In a door operating mechanism, the combination with a frame, foldahle doors and a foldable ste' carried by said frame, means extending t1 rough the top of said frame for simultaneously operating said doors and step, and a motor mounted on the top of said frame for actuating said doors and step operating means. p

2'. In a door operating mechanism, the combination with a frame, foldahle doors and a. foldahle step carried by said frame,

for operating said doors and step extending through the top of said frame, and nnemnaticmotor located on the top of said over said door and connected to afe I. 'ng the same.

sting mechanism for cies, the combination with a .aole doors carried thereby, a pneumatic motor located on the top of said shafts for operating said shafts, and means for maintaining a proper alinement of bearings between said motor and its connections with said shafts.

5. In a door operating mechanism for passenger vehicles, the combination with a car frame, foldable doors carried thereby, a motor mounted on the top of said frame located over said doors for opening and closing said doors and adjustable connections between said motor and said. doors.

6. in a door operating mechanism for passenger vehicles, the combination With a car frame, foldable doors carried by said frame, shafts extending through the top of said frame for operating said doors, a motor,

and adjustable connections between said shafts and said motor.

7. In a door operating mechanism for passenger-vehicles, the combination with a car frame, foldable doors carried thereby, shafts extending through the top of said frame for operating said doors, a lever for actuating said shafts, a motor mounted on the top of said frame and means for adjustably connecting' said motor to the ends of said levers.

8. In a door operating mechanism for passenger vehicles, the combination with a car frame, foldahle doors carried thereby, shafts extend. g through the top of said frame for operating said doors, lever for actuating said shafts, amotor mounted on the top of said frame and located over said doors, said lever provided with a threaded hore at an angle to the longitudinal axis of the lever, and a threaded bolt passing through said here and connected to said motor to form an adjustable connection between said motor and said shafts.

in testimony whereof I have hereunto set my hand on this 11th day of July, A. D.

PARIS R. FORE/JEAN. 

